Storyteller Mair Tomos Ifans will be telling children tales of his dramatic exploits and there will be a demonstration of weapons - such as the skills of using a bow and arrow - used in his day.

'Greatest Welshman'

Adrien Jones, president of the Owain Glyndwr Society, formed to honour his contribution to the history of Wales, said: "There is no question about it, he is the greatest Welshman.

"Had it not been for Owain, Wales would not be a nation today.

"He rejuvenated the spirit of independence in this country."

His daughter Catrin was captured with her son and two daughters at Harlech in 1409.

They spent the next four years locked up in the Tower of London and died six months after Henry V took over the English throne.

The Owain Glyndwr Society - who have boasted Sian Phillips and Bryn Terfel among its patrons - has campaigned for the Royal Mail to mark the 600th anniversary of the first Welsh parliament by issuing commemorative stamps next year.

The society has also called on the Welsh assembly to celebrate his life by depicting him in a stained glass window in the new assembly building in Cardiff Bay.